Recently, the government installed a boundary layer profiler (BLP), which is operated under the Doppler beam swinging mode, in a coastal area of China, to acquire useful wind field information in the atmospheric boundary layer for several purposes. And under strong wind conditions, the performance of the BLP is evaluated. It is found that, even though the quality controlled BLP data show good agreement with the balloon observations, a systematic bias can always be found for the BLP data. For the low wind velocities, the BLP data tend to overestimate the atmospheric wind. However, with the increment of wind velocity, the BLP data show a tendency of underestimation. In order to remove the effect of poor quality data on bias correction, the probability distribution function of the differences between the two instruments is discussed, and it is found that the t location scale distribution is the most suitable probability model when compared to other probability models. After the outliers with a large discrepancy, which are outside of 95% confidence interval of the t location scale distribution, are discarded, the systematic bias can be successfully corrected using a first-order polynomial correction function. The methodology of bias correction used in the study not only can be referred for the correction of other wind profiling radars, but also can lay a solid basis for further analysis of the wind profiles.
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February 2018
Research Article|
February 05 2018
Performance evaluation and bias correction of DBS measurements for a 1290-MHz boundary layer profiler
Zhao Liu;
Zhao Liu
Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, Harbin Institute of Technology
, Harbin 150090, China
and Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information Technology, Harbin Institute of Technology
, Harbin 150090, China
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Chaorong Zheng;
Chaorong Zheng
a)
Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, Harbin Institute of Technology
, Harbin 150090, China
and Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information Technology, Harbin Institute of Technology
, Harbin 150090, China
Search for other works by this author on:
Yue Wu
Yue Wu
Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, Harbin Institute of Technology
, Harbin 150090, China
and Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information Technology, Harbin Institute of Technology
, Harbin 150090, China
Search for other works by this author on:
a)
Author to whom correspondence should be addressed: [email protected]
Rev. Sci. Instrum. 89, 025105 (2018)
Article history
Received:
July 29 2017
Accepted:
January 13 2018
Citation
Zhao Liu, Chaorong Zheng, Yue Wu; Performance evaluation and bias correction of DBS measurements for a 1290-MHz boundary layer profiler. Rev. Sci. Instrum. 1 February 2018; 89 (2): 025105. https://doi.org/10.1063/1.4998215
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